diff --git a/esphome/core_config.py b/esphome/core_config.py
index 159b1b7ef4..59ca35fa80 100644
--- a/esphome/core_config.py
+++ b/esphome/core_config.py
@@ -194,7 +194,7 @@ def preload_core_config(config):
         if 'esphomeyaml' in config:
             raise EsphomeError(u"The top-level 'esphomeyaml' section has been renamed to "
                                u"'esphome' in 1.11.0.\n"
-                               u"Please replace the esphomeyaml: line in your config with"
+                               u"Please replace the esphomeyaml: line in your config with "
                                u"esphome:")
         raise EsphomeError(u"No esphome section in config")
     core_conf = config[CONF_ESPHOME]